'\" te
.\" Copyright (C) 1990, Regents of the University of Michigan.  All Rights Reserved.
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.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
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.TH LDAP_ERROR 3LDAP "August 29, 2021"
.SH NAME
ldap_error, ldap_err2string, ldap_perror, ldap_result2error \- LDAP protocol
error handling functions
.SH SYNOPSIS
.nf
cc[ \fIflag\fR... ] \fIfile\fR... -lldap[ \fIlibrary\fR... ]
#include <lber.h>
#include <ldap.h>

\fBchar *\fR\fBldap_err2string\fR(\fBint\fR \fIerr\fR);
.fi

.LP
.nf
\fBvoid\fR \fBldap_perror\fR(\fBLDAP *\fR\fIld\fR, \fBconst char *\fR\fIs\fR);
.fi

.LP
.nf
\fBint\fR \fBldap_result2error\fR(\fBLDAP *\fR\fIld\fR, \fBLDAPMessage *\fR\fIres\fR, \fBint\fR \fIfreeit\fR);
.fi

.SH DESCRIPTION
These functions interpret the error codes that are returned by the LDAP API
routines. The \fBldap_perror()\fR and \fBldap_result2error()\fR functions are
deprecated for all new development. Use \fBldap_err2string()\fR instead.
.sp
.LP
You can also use \fBldap_parse_sasl_bind_result\fR(3LDAP),
\fBldap_parse_extended_result\fR(3LDAP), and \fBldap_parse_result\fR(3LDAP) to
provide error handling and interpret error codes returned by LDAP API
functions.
.sp
.LP
The \fBldap_err2string()\fR function takes \fIerr\fR, a numeric LDAP error
code, returned either by \fBldap_parse_result\fR(3LDAP) or another LDAP API
call. It returns an informative, null-terminated, character string that
describes the error.
.sp
.LP
The \fBldap_result2error()\fR function takes \fIres\fR, a result produced by
\fBldap_result\fR(3LDAP) or other synchronous LDAP calls, and returns the
corresponding error code. If the \fIfreeit\fR parameter is non-zero, it
indicates that the \fIres\fR parameter should be freed by a call to
\fBldap_result\fR(3LDAP) after the error code has been extracted.
.sp
.LP
Similar to the way \fBperror\fR(3C) works, the \fBldap_perror()\fR function can
be called to print an indication of the error to standard error.
.SH ERRORS
The possible values for an LDAP error code are:
.sp
.ne 2
.na
\fB\fBLDAP_SUCCESS\fR\fR
.ad
.sp .6
.RS 4n
The request was successful.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_OPERATIONS_ERROR\fR\fR
.ad
.sp .6
.RS 4n
An operations error occurred.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_PROTOCOL_ERROR\fR\fR
.ad
.sp .6
.RS 4n
A protocol violation was detected.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_TIMELIMIT_EXCEEDED\fR\fR
.ad
.sp .6
.RS 4n
An LDAP time limit was exceeded.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_SIZELIMIT_EXCEEDED\fR\fR
.ad
.sp .6
.RS 4n
An LDAP size limit was exceeded.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_COMPARE_FALSE\fR\fR
.ad
.sp .6
.RS 4n
A compare operation returned false.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_COMPARE_TRUE\fR\fR
.ad
.sp .6
.RS 4n
A compare operation returned true.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_STRONG_AUTH_NOT_SUPPORTED\fR\fR
.ad
.sp .6
.RS 4n
The LDAP server does not support strong authentication.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_STRONG_AUTH_REQUIRED\fR\fR
.ad
.sp .6
.RS 4n
Strong authentication is required for the operation.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_PARTIAL_RESULTS\fR\fR
.ad
.sp .6
.RS 4n
Only partial results are returned.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_NO_SUCH_ATTRIBUTE\fR\fR
.ad
.sp .6
.RS 4n
The attribute type specified does not exist in the entry.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_UNDEFINED_TYPE\fR\fR
.ad
.sp .6
.RS 4n
The attribute type specified is invalid.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_INAPPROPRIATE_MATCHING\fR\fR
.ad
.sp .6
.RS 4n
The filter type is not supported for the specified attribute.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_CONSTRAINT_VIOLATION\fR\fR
.ad
.sp .6
.RS 4n
An attribute value specified violates some constraint. For example, a
\fBpostalAddress\fR has too many lines, or a line that is too long.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_TYPE_OR_VALUE_EXISTS\fR\fR
.ad
.sp .6
.RS 4n
An attribute type or attribute value specified already exists in the entry.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_INVALID_SYNTAX\fR\fR
.ad
.sp .6
.RS 4n
An invalid attribute value was specified.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_NO_SUCH_OBJECT\fR\fR
.ad
.sp .6
.RS 4n
The specified object does not exist in the directory.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_ALIAS_PROBLEM\fR\fR
.ad
.sp .6
.RS 4n
An alias in the directory points to a nonexistent entry.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_INVALID_DN_SYNTAX\fR\fR
.ad
.sp .6
.RS 4n
A syntactically invalid DN was specified.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_IS_LEAF\fR\fR
.ad
.sp .6
.RS 4n
The object specified is a leaf.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_ALIAS_DEREF_PROBLEM\fR\fR
.ad
.sp .6
.RS 4n
A problem was encountered when dereferencing an alias.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_INAPPROPRIATE_AUTH\fR\fR
.ad
.sp .6
.RS 4n
Inappropriate authentication was specified. For example,
\fBLDAP_AUTH_SIMPLE\fR was specified and the entry does not have a
\fBuserPassword\fR attribute.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_INVALID_CREDENTIALS\fR\fR
.ad
.sp .6
.RS 4n
Invalid credentials were presented, for example, the wrong password.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_INSUFFICIENT_ACCESS\fR\fR
.ad
.sp .6
.RS 4n
The user has insufficient access to perform the operation.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_BUSY\fR\fR
.ad
.sp .6
.RS 4n
The DSA is busy.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_UNAVAILABLE\fR\fR
.ad
.sp .6
.RS 4n
The DSA is unavailable.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_UNWILLING_TO_PERFORM\fR\fR
.ad
.sp .6
.RS 4n
The DSA is unwilling to perform the operation.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_LOOP_DETECT\fR\fR
.ad
.sp .6
.RS 4n
A loop was detected.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_NAMING_VIOLATION\fR\fR
.ad
.sp .6
.RS 4n
A naming violation occurred.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_OBJECT_CLASS_VIOLATION\fR\fR
.ad
.sp .6
.RS 4n
An object class violation occurred. For example, a \fBmust\fR attribute was
missing from the entry.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_NOT_ALLOWED_ON_NONLEAF\fR\fR
.ad
.sp .6
.RS 4n
The operation is not allowed on a nonleaf object.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_NOT_ALLOWED_ON_RDN\fR\fR
.ad
.sp .6
.RS 4n
The operation is not allowed on an RDN.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_ALREADY_EXISTS\fR\fR
.ad
.sp .6
.RS 4n
The entry already exists.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_NO_OBJECT_CLASS_MODS\fR\fR
.ad
.sp .6
.RS 4n
Object class modifications are not allowed.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_OTHER\fR\fR
.ad
.sp .6
.RS 4n
An unknown error occurred.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_SERVER_DOWN\fR\fR
.ad
.sp .6
.RS 4n
The LDAP library cannot contact the LDAP server.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_LOCAL_ERROR\fR\fR
.ad
.sp .6
.RS 4n
Some local error occurred. This is usually the result of a failed
\fBmalloc\fR(3C) call or a failure to \fBfflush\fR(3C) the \fBstdio\fR stream
to files, even when the LDAP requests were processed successfully by the remote
server.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_ENCODING_ERROR\fR\fR
.ad
.sp .6
.RS 4n
An error was encountered encoding parameters to send to the LDAP server.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_DECODING_ERROR\fR\fR
.ad
.sp .6
.RS 4n
An error was encountered decoding a result from the LDAP server.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_TIMEOUT\fR\fR
.ad
.sp .6
.RS 4n
A time limit was exceeded while waiting for a result.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_AUTH_UNKNOWN\fR\fR
.ad
.sp .6
.RS 4n
The authentication method specified to \fBldap_bind\fR(3LDAP) is not known.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_FILTER_ERROR\fR\fR
.ad
.sp .6
.RS 4n
An invalid filter was supplied to \fBldap_search\fR(3LDAP), for example,
unbalanced parentheses.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_PARAM_ERROR\fR\fR
.ad
.sp .6
.RS 4n
An LDAP function was called with a bad parameter, for example, a \fINULL\fR
\fIld\fR pointer, and the like.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_NO_MEMORY\fR\fR
.ad
.sp .6
.RS 4n
A memory allocation call failed in an LDAP library function, for example,
\fBmalloc\fR(3C).
.RE

.sp
.ne 2
.na
\fB\fBLDAP_CONNECT_ERROR\fR\fR
.ad
.sp .6
.RS 4n
The LDAP client has either lost its connection to an LDAP server or it cannot
establish a connection.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_NOT_SUPPORTED\fR\fR
.ad
.sp .6
.RS 4n
The requested functionality is not supported, for example, when an LDAPv2
client requests some LDAPv3 functionality.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_CONTROL_NOT_FOUND\fR\fR
.ad
.sp .6
.RS 4n
An LDAP client requested a control not found in the list of supported controls
sent by the server.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_NO_RESULTS_RETURNED\fR\fR
.ad
.sp .6
.RS 4n
The LDAP server sent no results.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_MORE_RESULTS_TO_RETURN\fR\fR
.ad
.sp .6
.RS 4n
More results are chained in the message chain.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_CLIENT_LOOP\fR\fR
.ad
.sp .6
.RS 4n
A loop has been detected, for example, when following referrals.
.RE

.sp
.ne 2
.na
\fB\fBLDAP_REFERRAL_LIMIT_EXCEEDED\fR\fR
.ad
.sp .6
.RS 4n
The referral exceeds the hop limit. The hop limit determines the number of
servers that the client can hop through to retrieve data.
.RE

.SH ATTRIBUTES
See \fBattributes\fR(7) for a description of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Committed
.TE

.SH SEE ALSO
\fBfflush\fR(3C), \fBldap\fR(3LDAP), \fBldap_bind\fR(3LDAP),
\fBldap_result\fR(3LDAP), \fBldap_parse_extended_result\fR(3LDAP),
\fBldap_parse_result\fR(3LDAP), \fBldap_parse_sasl_bind_result\fR(3LDAP),
\fBldap_search\fR(3LDAP), \fBmalloc\fR(3C), \fBperror\fR(3C) ,
.BR attributes (7)
